4iii Shimano Ultegra R8000 Precision Left-Side Power Meter reviews and deals for sale

You're a "numbers guy." It began in high school when your stats teacher handed out assignments, and continued into adulthood when your boss asked you to review the annual report. Even when you hop in the saddle to train, your mind is driven onward by the data that surrounds you. And that's why you ride with the 4iii Shimano Ultegra R8000 Precision Left-Side Power Meter — so you can push your limits knowing data from every pedal stroke is measured for optimal performance. And all you had to do was install the Precision power meter crank arm to collect tangible and reliable numbers on your quest to improve your ride.